Rod-packing.



A. M. FOWLER.

ROD PACKING.

APPLICATION FILED MAY 22. 1915.

THH 1 i9 20 WEED STATES PATENT @FFEQE.

ARIS' M. FOWLER, OF EAST lOINT, GEGRGLA.

BOD-PACKING.

Application filed May 22, 1915.

To all whom it may concern:

Be it known that I, Ams M. FowLnR, a citizen of the United States,residing at East Point, county of Fulton, and State of Georgia, haveinvented certain new and useful Improvements in Rod-Packing, of whichthe following is a specification.

This invention relates to rod packing and more particularly to stuffingboXes used in connection with pumps, engine cylinders, or valves toprevent the escape of water, steam,

gas or air from the pump or engine with which it is used at the junctureof the cylinder or pump head with the piston rod.

The invention aims primarily to provide an improved rod packing ofsimple construction, composed of but few inexpensive and readilyassembled parts, which will prove thoroughly efiicient in practice andwhich is capable of adjustment to increase the pressure of the packingelement upon the rod without the use of special instruments; I g u Afurther object of the invention is to provide a stuffing box or rodpacking wherein adjustment may be made to create uniform pressure uponthe packing element to insure a tight joint at all points in thereciprocating rod.

Other objects will appear hereinafter.

The invention consists in the novel combination and arrangement ofparts, and details of construction, all as will be described more fullyhereinafter and particularly pointed out in the claims.

The invention will be more readily understood by reference to theaccompanying drawings wherein Figure 1 is a vertical section takenthrough a stuffing boX constructed in accordance with my invention,parts being illustrated in elevation. Fig. 2 is a section takensubstantially along the line 22 and looking in the direction indicatedby the arroW, Fig. 3 is a sectional view taken substantially along theline 3-.3 of Fig- 2, and Fig. 4: is a detail perspective view of one ofthe im proved sleeve sections employed in carrying my invention intoeffect. I

In accomplishing the objects set forth above I arrange the improvedstuffing box in the form of a hollow barrel inclosing the rod, the saidbarrel being composed of separate sections arranged in telescopicrelation to each other. structurally, the barrel comprises the separablemembers 5 and 6, the

Specification of Letters Patent.

Patented Mar. 14, 1916.

Serial No. 29,757.

former being arranged to inclose the adjacent end of the latter snugly.The section 5 may be formed integral with the cylinder or pump head orit may be made separate there from and secured to the head in anydesired manner, the said member 5 being generally referred to hereafteras the fixed member within which the cooperating member 6 slides ortelescopes. Within the barrel thus formed and inclosing the rod 7 withwhich it isused is a packing material 8 which may be of any desiredconstituency. This'paclc ing 8 is to be acted upon as the same becomesworn or upon a wearing away of the rod to keep the same tightly pressedagainst the rod; and to insure a uniform pressure upon the packing uponapplication of inward force a split collar 9 is placed thereover. Asshown more clearly in Fig. 3 of the drawing the collar 9 has its endsoverlapping, and as the material of which the same is constructed ispreferably a thin spring steel it is obvious that upon inward pressurethereon this collapsible member will readily permit of its contractionof diameter.

As an efficient means for transmitting pressure uniformly to the packingabove described, a split sleeve 10 is provided. This sleeve is shown inthe present instance as being constructed of a pair of identicallyformed sections 11 and 12, each being bored so as to provide whenproperly assembled a bore through which the rod may reciprocate. Thebore of each of the sleeve sections is enlarged inwardly from one end tosubstantially mid-way of the length of the section,

and it is to inclose the packing and its collapsible ring abovedescribed that the enlarged bore is provided. The bore for the remainderof the length of the sleeve sections is reduced in diameter to form,when the sections are assembled over a rod, a bore a trifle greater indiameter than that of the said rod, in order that the latter may besubstantially inclosed and at the same time to permit of a free andunencountered movement of the said rod. At-the juncture of the differentsized bores provided in the sleeve section a shoulder 13 is provided,and engaging against this shoulder is a looking washer 14 inclosing therod 7. It is against this Washer 14 that the inner end of the packingand the collapsible ring surrounding the same engages, and to hold thewasher against movement longitudinally of i the rod when the latterreciprocates the barrel.

washer will be locked against movement in either directionlongitudinally of the rod 7. By providingthe groove or channel 13 ofgreater diameter than that of the Washer in ward and outward adjustmentofthe sleeve sections will not be prevented by the presence of thewasher within the sleevesections. An annular groove 15 is formed on theouter surface of the sectional sleeve at each end thereof for thereception of spring clamps 16, the latter serving to hold the members ofthesectional sleeves assembled.

From the above description it is apparent that upon inward pressure ofthe members constituting the various sections of the sleeve 10, thepressure will be transmitted through the split collar 9 to the packingelement '8 inclosing or surroundingthe rod'7, thereby insuring a tightjoint. The radial adjustment of the sleeve sections is permitted by'reason of the fact that the smaller bore of the sectional sleeve is of adiameter a trifle greater than that of the rod so that V the bore of thesleeve section is prevented from contacting the rod 7.

For the purpose of regulating the pressure without the necessity ofremoving any of the parts of the device, the outer surface of each ofthe sections forming the sectional sleeve is provided with an inclinedor beveled surface constituting a rib 17 extending lengthwise of thesleeve section upon which it is formed, and which is adapted tocooperate with an inclined or beveled surface 18 formed upon the innerdiameter or surface or the cap or telescopic member 6 of the It will beobserved from the disclosure in Figs. 1, 3 and 4: of the drawing 7 thatthe beveledor inclined rib-17 is formed upon the sleeve sections in suchmanner that the surface upon the sameto be engaged by the inner beveledface of the cap 6 is substantially midway between the lateral edgesmembers 5 and 6, and it is apparent that upon operation of the nuts 20thereon inward pressure of the member 6 will be transmittedthrough thebevel or inclined face 18, through the rib. 17, 'to ultimately'operateupon the packing 8. Various degrees of pressure upon the packing maythus be had,

and as the arrangement of the several parts of the device operates totransmit uniform r pressure upon the packing it will be readilyunderstood that wearing away of the packing or of the rod maybecompensated for very readily by adjustments of the nuts 20.

It is to be observed that in the operation or ad ustments of the nuts2-0 to force the telescopic member 6 inwardly, the sectional sleeve,together with the'packing element carried thereby, will be forcedagainst the end or inner wall of the element 5 of the p barrel, therebyinsuring against leakage of steam, water or air from the cylinder orpumprwith which the stuffing box is used. It is also obvious that a rodpacking'constructed in accordance with this invention may bemanufactured at extremelylow cost, and that the same may be easily andquickly applied to an engine or pump without the use of special tools'or'instruments in'the. V 7 application or in making adjustments off thedevice, and that the lack of friction of any of the parts with the rodlengthens the life of the rod and of the stufling box elements.

' I claim: j

' 1. A packing box comprising a'hollow barrel formed of a pair ofseparable members arranged" in telescopic relation over arod, a packingwithin said barrel surround-Q ing said rod, a split collar ofsubstantially thin metal surrounding said packing, a sectional sleeveprovided ad acent one end with a bore for inclosing said split collarand at its opposite end having its bore reducedfor inclosing said rod,each of said sleeve sections, being provided with an arcuate groove atthe intersection of said bores,

a lockingmember encircling said rod, and

engaged within said arcuate grooves, and cooperating bevel faces on saidsleeve sections i and one of said separable members whereby inwardpressure on the former will be increased upon inward telescopic movementof the latter,v substantially as described.

2. A stutfing box. surrounding a rod and comprising a fixed and amovable member, a rod packing in said box, a split collar inclosing saidpacking,-a sectional sleeve engaging over said splitv collar and adaptedto be forcedinwardly thereon upon movement of said movable member in onedirection, an annular groove formed inthe bore of said split sleeve, awasher of slightly less diameter than that'of said'groove encirclingsaid rod and extending into said groove to hold said sleeve sections inlocked relation, and

spring clamps inclosing said sectional sleeve, substantially asdescribed.

3. A packing box surrounding a rod and consisting of a pair oftelescopic members, a rod packing in said box, a sectional sleeveinclosing said packing and adapted to exert inward pressure thereon,each section of said sleeve being provided on its outer surface with arib substantially mid-way between the transverse edges thereof, and oneof said telescopic members being provided upon its interior with a bevelsurface normally engaging said ribs, substantially as described.

4:. A packing box surrounding a rod and consisting of a pair oftelescopic members, a rod packing in said box, a sectional sleeveinclosing said packing and adapted to exert inward pressure thereon,each section of said sleeve being provided on its outer surface with alongitudinally extending beveled rib substantially mid-way between thetransverse edges thereof, one of said telescopic members being providedupon its interior with a bevel surface normally engaging said ribs, andmeans for holding said separable members in adjusted position,substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

' ARIS M. FOWLER. Witnesses:

Gno. L. SUGos, Jr., B. B. BAKER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

